Question

Point R is at (4, 1.5) and Point T is at (4, 2.9) on a coordinate grid. The distance between the two points is ____

Answer 1

http://en.wikipedia.org/wiki/Euclidean_distance

Answer 2

These two points are located on the same x-axis. Therefore, you can simply subtract the numbers in the y-axis (2.9 - 1.5).

Answer 3

Yes, that's true. In any case euclidean distance is based on the Pythagorean theorem. You should know this, even though this particular question is easy to solve.